1) Muscles are WEAKEST at the EXTREMES of the range. SO, learn to isolate these points of the strength curve and make it stronger. As a result you will become proportionally stronger in the mid-range and GROWTH WILL OCCUR!
2) Always try to work a muscle through its complete Range of Motion (ROM), although that may not be possible within ONE exercise. It is always possible within a given workout!
3 ) Muscles DO NOT recognize weight!! Muscle recognize TENSION! Increase tension, increase growth!
4)TIME under TENSION=GROWTH
5) ALWAYS INITIATE with the working muscle! (if you’re training your delts, the first movement MUST come from the delt, not somewhere else or momentum!)
6) CONTROL through the entire range is a must. A negative(eccentric) rep should be under such conscious control that you can change direction at ANY point of that ROM, and start coming back up(concentric).
7) Larger muscle require more stimulus to reach exhaustion. But also take longer to recover between workouts.
8) KNOW which muscle are fast twitch and which are more slow twitch!! This will ALWAYS affect how you approach training that muscle.
9) Work a variety of rep ranges within each workout. Different rep ranges allow you to vary your TUT (time under tension), and ensure you’re working all types of muscle fibers.
10) SQUEEZE every rep to make sure you fully contract the muscle.